Solve Express Your Answer as a Signed Number $\frac{(-0.8)^{2}+(0.4)^{2}+(0.1)^{2}}{3}$ Find This Number, Rounded to the Nearest Hundredth

Multiple Choice

Solve. Express your answer as a signed number.
-In a statistics course, you need to carry out the following computation: $\frac{(-0.8) ^{2}+(0.4) ^{2}+(0.1) ^{2}}{3}$ . Find this number, rounded to the nearest hundredth.

A) 0.1
B) 0.5
C) 0.27
D) 0.84